兑水 发表于 2009-11-4 21:10:47

ASTM E 1158-2004 金属和金属合金生产材料的脉冲纵向波超声...

E1158-04 Standard Guide for Material Selection and Fabrication of Reference Blocks for the Pulsed Longitudinal Wave Ultrasonic Examination of Metal and Metal Alloy Production Material
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